Steering-gear.



E. WERNDL.

STEERING GEAR.

APPLIOATION FILED AUG. 1a. 1909.

Patented Mar. 14, 1.911.

INVENTOR Ernst WEIPWCZZ WITNESSES ATTORNEYS l1; To alljwhoih it concern:

UNITED STATES PATENT OFFIGE.

' ERNST WEfiNDL, OF PYRAGH POSTGAR STEN, NEAR STEYB, AUSTRIA-HUNQARY.

STEERING-GEAR.

4 Be itknown that I, ERNST W armor, a sub- -my. more particular vr de a steering gear ject offthe Emperor of Austria-Hungary, and aresident'of'Pyrach Post Garsten, near Steyr,

clear, and exact dey inventiondrelates to steering gears,

suitable for air ships,

dirigible balloons, and flying machines of all kinds,

or down,. o'r to perform any reasonable comi posit-ion of movements, all by. aid oftwo' steering wheels disposed one above theother "2; andin close proximity to each-other, these wheels'bein journale'dupon an axis which IS fixed relatively to the general framework of the machine.

' '1] Ref erence. is to behad to the accompanying i ,drawings f0rming a part of this specification, in whieh similar characters of refer- -;25.

ence indicate corresponding parts in all the re 1 is a -Steer'1ng gear appliedlto the framework of a detail showingin section the two steering shaftsupon which they are eating the various motions and positions of the twov steering 'wheelswhereby they are enabled, through'controlof-the rudders, to

bring the machine under :control of the opends of the lever 3' are 7 'Qerator. 7 The gene'ralframework is shown at 1.

At 2 is a rudder'mounted to swing in a plane horizontal to the normal position of' the machine. Thetiller lever 3 is connected rigidly with the-rudder 2 and is used. for turning the latter. Mounted upon opposite pulleys 4, 5. At 6 is another rudderwhich however, is jourupon 'th'elatter'are v helowthe eering wheel 10 and parallel naled. tomove in a plane, vertical as compared with the normal positionrof the maf chine. 1 Connected rigidly with this rudder (Sis a tiller lever 7 carryingat its ends pulleys 8, '2. A steering wheel 10 is mounted upon a steering shaft ll 'and secured rigidly pulleys12, 13. At 14 is another steering wheel disposed immediately AuStria Hungary, have invented a newand Improved Steering-Gear, of which thelfollowing is a full, -S051ft-10h:

purpose being to j proa. further purpose being to'provide' for turning the craft to right or left and up erspeetive showing my p v Specification of Letters Patent. Patented 1 14, 191] Application med August 13, 1909.

Serial No. 512,667.

with the same. The steering Wheel 14 is mounted rigidly upon a tubular shaft 15, the

latt lr'carrying tWO pulleys 16, 17 which a ipon it. 1

'At 18 "is a cord, 'or other flexible connec tion, which engages and passes partially around the various pulleys 8, 9, 12tm-d16,

so as to enable motion of the pulleys 12, 16

to turn the rudder'G. v l At 19 is a'cord, or other flexible connec- ',tion, which passes partially around the various pulleys 4, 5, 13, 17, so as to enable'the pulleys 13, 17 to turn the'ru'dder 2.

he operation of my-device is as follows So long as both rudders 2fand 6 are stationary, the steering wheels 10, 1 1 are'like'wise stationary. In order,'however, to turn either or both of the rudders, the wheels 10; 14 are manipulated accordingly. For instance, if

the operator desires that .the machine be turned to the leftwhile stil maintaining its he turns both steering wheels'lO, 14- in a contraclockwise direction; as indicated in Fi position relatively to the level of the earth,

3. Following the movements of the pulleys 12, .16, and it will be seen that whilethe'pulleys 8, Qare :turned, the tiller lever 7 is not shifted iii its position and consequently the rudder 6'remains stationaryl -Not so, however, with the rudder 2, which is shiftcdtothe'left t hat is, ina clockwise direction, asseen from above. Suppose, now, that the operator wishes to turn'the machine to the right. He turns the steering wheels 10, 1 1' in a clock wise direction, as'indica'ted in Fig. 1." This swings the rudder2 slightly in' a contraclockwise direction and turns the machine accordingly. If the operator desires that the machine upper steering wheel 10 in a contraclockwise direction and theloweristeering Wheel 14in a clockwise direction.- The movements of the cord 19 in this case are'such that the of the cord 18 actuated thereby,

move upwardly, he turnsthe '3 pulleys 4, 5 simply turn upon theirrespective axes without shifting the position-of the tiller lever 3 and without turning the rudder2. The rudder 6 and tiller lever 7, however, areturned so that the outer or free endof the rudder 6 is-raised. In order 'for' the machineto descend-that is, glide gradually downwardthe steering wheel 10 is turned in a'clockwise' direction and the steering wheel 14 in a contraclockwise direction, as indicated in Fig. 6.

Composite movements of the machine may 111 certaln 1n- Q a a 986,882

stancesbe eflected by a simple rotation of one of the steering wheels. For instance, as indicated in Fig. 7 if the steering wheel 10 be turned in a contraclockwisedirection, the steering wheel 14 meanwhile remaining undisturbed, the rudder 6 is moved so that its outer or free end rises and at the same time the rudder 2 swings in a clockwise direction, as seen from above, the result being that the machine turns to the left and glides,

upwardly. If the steering wheel 10 remains undisturbed and the-steering wheel 14 be turncdvin a clockwise direction, the machine turns to the right and glides upwardly, as indicated in Fig. 8. If the steering wheel 14 be turned in a clockwise direction, as indicated in Fig. 9, the machine turns to the left and at the same time glides downwardly.

If the steering wheel 14 remains undisturbed and the steering wheel 10 be turned'in a clockwise direction, as indicated in Fig. 10, the machine turns to'the right and at the same time glides downwardly.

It will be noted that when both steering wheels 10, 1.4 are turned in the same direction, as indicated, for instance, in Fig. 3, or in Fig. 4, the various pulleys 8, 9, 12 and 16, while turning in response to the rotative eflect given the steering wheel, do not dis-' turb the rudder 6 because the movement is compensated by mere rotation of the alleys and no pull is exerted upon the tiller ever 7. The mechanism connected with the steering wheels 10, 14, for the purpose of actuating the rudders, is, therefore, essentially a differential gearing. 14 are about an inch apart; and being thus close together may be held with one hand.

I do not limit myself to the particular kind of craft upon which my steering gear is to be used. Neither do I limit myself to the particular arrangement here shown for enabling'the steering wheels, or their equivalents, to turn the rudders. Neither do I limit myself to the particular type of .genring herein shown, as other kinds of differential gearing may be substituted therefor without departing from the spirit of my invention. A

Having thus described my invention, I claim as new, and desire to secure by Letters Patent:

1. In a steering gear, the combination of a pair of steering wheels, one disposed directly over the other and in close proximity to the same, gearing in operative relation to both of said.wheels,.anda steering member connected with said gearing and controllable thereby.

2. In a steering gear, the combinationoi The steering wheels 10,

a pair of steering wheels, one of said steering wheels being disposed directly over the other and in close proximity thereto, a pair of steering members mounted to move in difierent planes, and gearing connected with both of said steering members and also with both of said steering wheels for the purpose of enabling movements of said steermg wheels to actuate said steering members independ-- ently of each other.

3. In a steering gear, the combination of a steering shaft, a steering wheel connected rigidl therewith for turning the same, a secon steeringshaft having a tubular form and encircling said first-mentioned'steering shaft, a steering wheel connected ri 'dly witlrsaid second-mentioned steering s aft, a rudder, and mechanism connected with said rudder and with both of said steering shafts and controllable by the joint action shafts, pulleys mounted upon the same, a

cord engaging said last-mentioned pulleys and also engaging sald pulleys upon said .80 thereof for the purpose of moving said' tiller lever, and means controllable at will pendently of each other.

- 6. The combination of' a framework, a rudder journaled thereupon and adapted to swing, gearing mounted upon said framework and connected with said rudder for the purpose of actuating the latter, a" pair of shafts connected with said gearing for the purpose of controlling the same, and a pair of steering wheels each being connected with oneof said shafts, said steering wheels being mounted'to turn in planes which are fixed relatively to the general position of said framework. V

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ERNST WERNDL. Witnesses:

WALTON HARRISON, Pmmr D. Ronmmus.

for turning said la st-mentioned pulleys inde- 

